All About Photographic Lenses.
Specifications, comparison, reviews, MTF-charts for lenses by Canon, Nikon, Sony, Pentax, Olympus, Sigma, Tamron, Carl Zeiss, etc.

Canon FDn 300 mm f/ 4 used:

NameFull namePlaceScoresRank
1buslig22 Buslig392.8lvl.3 (Lens-Competent)
2Alessandro Rivellini Alessandro140.8lvl.2 (Lens-Adept)